require 'formula'

class GstPython < Formula
  homepage 'http://gstreamer.freedesktop.org/'
  url 'http://gstreamer.freedesktop.org/src/gst-python/gst-python-0.10.22.tar.bz2'
  sha1 '7012445d921ae1b325c162500750c9b0e777201f'

  depends_on 'pkg-config' => :build
  depends_on 'gst-plugins-base'
  depends_on 'pygtk'

  def install
    system "./configure", "--disable-dependency-tracking",
                          "--prefix=#{prefix}"
    system "make install"
  end

  def caveats; <<-EOS.undent
    For non-Homebrew Python, you need to amend your PYTHONPATH like so:
      export PYTHONPATH=#{HOMEBREW_PREFIX}/lib/#{which_python}/site-packages:$PYTHONPATH
    EOS
  end

  def which_python
    "python" + `python -c 'import sys;print(sys.version[:3])'`.strip
  end

  def test
    mktemp do
      (Pathname.pwd+'test.py').write <<-EOS.undent
        #!/usr/bin/env python

        import time

        import pygst
        pygst.require('0.10')
        import gst

        import gobject
        gobject.threads_init()

        def main():
            pipeline = gst.parse_launch(
                'audiotestsrc ! audioresample ! fakesink')
            pipeline.set_state(gst.STATE_PLAYING)
            time.sleep(3)

        if __name__ == "__main__":
            main()
      EOS
      system "chmod +x test.py"
      system "./test.py"
    end
  end
end